Get X property name of window win. win is the window to check, an X window id, or 'root-window. name is a string or an X/11 atom (long). If consume? is #t, the X property is deleted after getting it. Default is not to delete. If the X property could not be found, #f is returned. If the X property could be found, a list '(value type format) is returned. "type" is a string. "format" is either 8, 16, or 32, giving the size of the elements of "value". "value" is a string, if "format" is 8, or a vector of integers otherwise.